the famu-cis alumni system
DESCRIPTION
Estimation. THE FAMU-CIS ALUMNI SYSTEM. TEAM ORANGE. CEN5055 Project Management Feb 23 rd 2009 Jamin Bao Martin Brown Sherene Campbell Saidi Mchumo Xian Long. Introduction. Tools used for estimation Function Points Units of measure based on functionality DVC - PowerPoint PPT PresentationTRANSCRIPT
THE FAMU-CIS ALUMNI SYSTEMTHE FAMU-CIS ALUMNI SYSTEM
CEN5055 Project Management
Feb 23rd 2009
Jamin Bao
Martin Brown
Sherene Campbell
Saidi Mchumo
Xian Long
EstimatioEstimationn
EstimatioEstimationn
TEAM ORANGETEAM ORANGE
INTRODUCTIONINTRODUCTION Tools used for estimation
Function Points Units of measure based on functionality
DVC The amount of data going through the system
Cocomo “COnstructive COst MOdel” model for estimating effort, cost, and schedule for software
projects Developed 1981
Cocomo II Same as Cocomo but for newer/more modern practices Developed 1997 – published in 2001
PROPOSED SSS MATRIX
21 Data Tables 11 Forms 7 Reports Proposed Matrix
LINES OF CODE (SLOC)LINES OF CODE (SLOC)
Team Member Lower Bound
Expected Upper Bound
Jiamin Bao 7900 8600 9100
Martin Brown 4340 6507 10143
Sherene Campbell
3530 4515 6125
Saidi Mchumo 8530 10850
Xian Long 9850 12020
Average 6830
7934
9647
10410
9640
FUNCTION POINTSFUNCTION POINTS:::OVERVIEW OVERVIEW
What is a Function Point? A standard unit of measure that represent
the functional size of a software application. An application can be measured by the
number of function points it delivers to the users of the application.
A SIMPLE SIX STEP COUNTING PROCESS Identify all instances of each function type in
the system. Assign a complexity weight to each instance
of a function type. Calculate a weighted sum for each function
type. Determine the unadjusted function count
(FC). Determine the Value Adjustment Factor
(VAF). Calculate FP Count.
Calculate unadjusted Function Count (FC)
Determine the Value Adjustment Factor (VAF)
Calculate Function Points
CALCULATING FUNCTION POINTSCALCULATING FUNCTION POINTS
IDENTIFY FIVE STANDARD “FUNCTION TYPES” AND COMPLEXITY WEIGHT
Data Functions: Internal logical files (ILFs) External interface files (EIFs)
Transactional Functions: External Inputs (EIs) External Outputs (EOs) External Inquiries (EIs)
CALCULATE UNADJUSTED FUNCTION COUNT (FC)
FUNCTION POINTS FOR ALUMNI SYSTEM FUNCTION POINTS FOR ALUMNI SYSTEM RESULTSRESULTS
LINES OF CODE (SLOC) ESTIMATE LINES OF CODE (SLOC) ESTIMATE FROM FUNCTION POINTSFROM FUNCTION POINTS
Past date indicate that one FP translate into 25 times of code
LOCs = 25 * 256 =6400 (approximately)
Factor SLOC25 640045 1152060 15360
DATA VOLUME COUNTERDATA VOLUME COUNTER:::DATA DATA DICTIONARYDICTIONARY
DATA VOLUME COUNTERDATA VOLUME COUNTER:::DATA DATA DICTIONARYDICTIONARY
DATA VOLUME COUNTERDATA VOLUME COUNTER:::DATA DATA DICTIONARYDICTIONARY
DATA VOLUME COUNTERDATA VOLUME COUNTER:::OVERVIEW OVERVIEW
Needs Data Dictionary
Purpose To calculate the input data volume
DATA VOLUME COUNTERDATA VOLUME COUNTER:::RESULTS RESULTS (FROM XIAN LONG)(FROM XIAN LONG)
DVC = 146 vs. function point 256
DATA VOLUME COUNTERDATA VOLUME COUNTER:::RESULTS RESULTS (FROM MARTIN)(FROM MARTIN)
DVC = 161 vs. function point 256
COCOMO IICOCOMO II ::: OVERVIEW OVERVIEW
To develop a software cost and schedule estimation model tuned to the life cycle practices of the 1990's and 2000's.
To develop software cost database and tool support
To provide a set of tools and techniques for evaluating the effects of software technology improvements on software life cycle costs and schedules.
COCOMO IICOCOMO II:::MODELSMODELS The Post-Architecture Model Most detailed COCOMO 2 model. Used after you've developed your project's overall
architecture. It has new cost drivers, new line counting rules & new
equations. The Early Design Model Get rough estimates of a project's cost and duration before
you've determined it's entire architecture. It uses a small set of new Cost Drivers, and new estimating
equations. Based on Unadjusted Function Points or KSLOC. Application composition model
• Used when software is composed from existing parts. Reuse model
• Used to compute the effort of integrating reusable components.
COCOMO IICOCOMO II:::EARLY DESIGN MODELEARLY DESIGN MODEL Estimates can be made after the requirements
have been done Based on a standard formula for algorithmic
models Effort (person-months) = A SizeB M where M = PERS RCPX RUSE PDIF PREX FCIL
SCED; A = 2.94 in initial calibration Size in KLOC B varies from 1.1 to 1.24 depending on novelty of the
project, development flexibility, risk management approaches and the process maturity.
COCOMO II COCOMO II ::: SCALE FACTORS (B)SCALE FACTORS (B)
COCOMO II COCOMO II ::: EFFORT ADJUSTMENT EFFORT ADJUSTMENT FACTOR(M)FACTOR(M)
EM NameRCPX Product Reliability and ComplexityRUSE Developed for ReusabilityPDIF Platform DifficultyPERS Personnel Capability and Mapping ExamplePREX Personnel ExperienceFCIL Facilites
COCOMO II COCOMO II ::: RESULTSRESULTS
results
CONCLUSIONCONCLUSION
Function Points Team DVC
Value: 256SLOC: 11520
SLOC: 7934 (average)
Martin: 161Xian: 145
Cocomo I Cocomo II
Effort: 21 (Likely) Effort: 28.7 (Likely)
Cost: Student: $50,399OutSource: $210,000
Cost:Student: $68,885OutSource:$287,022.62
QUESTIONSQUESTIONS
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